I see you really do not have a questions but;
EDIT: I did not see your Pg 1 before I posted below, but the link I posted has some very good info and also dirtdigger if he is still around.
If you have any questions about troy bilt tillers, need parts or manuals, etc try the link below.
I have not talked to him in awhile but a guy did hang out there called dirtdigger (chzuck) and is a troy bilt tiller specialist from old to new of all kinds and can steer you to most anything troy bilt tiller wise.
try this link for reference info:
https://www.mytractorforum.com/forums/tiller-talk.214/